INTERCHANGE INSTABILITY TURBULENCE MODEL IN EDGE TOKAMAK PLASMA

被引：27

作者：

BENKADDA, S ^{[1
]}

GARBET, X ^{[1
]}

VERGA, A ^{[1
]}

机构：

[1] CTR ETUD CADARACHE,DRFC SPPF,F-13108 ST PAUL DURANCE,FRANCE

来源：

CONTRIBUTIONS TO PLASMA PHYSICS | 1994年 / 34卷 / 2-3期

关键词：

D O I：

10.1002/ctpp.2150340224

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Interchange instability is investigated as a plausible mechanism to drive turbulence in the tokamak scrape-off-layer. By averaging density and electrostatic potential fluid equations along field lines, a reduced two dimensional model is obtained. Similarly to Rayleigh-Benard convection, interchange instability shows a instability threshold and presents localised modes (with a simple geometry and boundary conditions). The nonlinear, turbulent, behaviour of the model is investigated using numerical simulations. Preliminary results show a self-organization of the flow in coherent structures with a departure from gaussian statistics.

引用

页码：247 / 252

页数：6

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